SOAPMessage学习

1、消息结构：首先我们要知道SOAPMessage的结构

2、SOAP消息创建：实现一个SOAPMessage要通过以下几个步骤

		//1、创建消息工厂
			MessageFactory mFactory = MessageFactory.newInstance();
			//2、根据消息工厂创建SOAP消息
			SOAPMessage message = mFactory.createMessage();
			//3、创建soappart
			SOAPPart part = message.getSOAPPart();
			//4、获得SOAP信封SOAPEnvelope
			SOAPEnvelope envelope = part.getEnvelope();
			//5、可以通过SoapEnvelope有效的获取相应的body和header
			SOAPBody body = envelope.getBody();
			//6、根据QName创建相应的节点（QName就是一个带有命名空间的节点）
			//
			QName qname = new QName("http://service.soap.org/", "add", "ns");
			//可通过以下方式给消息体赋值
			SOAPBodyElement ele = body.addBodyElement(qname);
			ele.addChildElement("a").setValue("3");
			ele.addChildElement("b").setValue("5");
			//打印消息信息
			message.writeTo(System.out);

       可以得到如下消息

	
	
		
			3
			5
		
	

3、基于消息的传递方式：简单消息的传递要实现以下几个步骤

// 1、创建service服务
			URL url = new URL("http://localhost:8989/ws?wsdl");
			QName qname = new QName("http://service.soap.org/", "MyserviceImpl");
			Service service = Service.create(url, qname);
			// 2、创建Dispatch（基于消息的传递）
			Dispatch dispatch = service.createDispatch(new QName(
					"http://service.soap.org/", "MyserviceImplPort"),
					SOAPMessage.class, Service.Mode.MESSAGE);
			// 3、创建soap消息
			MessageFactory factory = MessageFactory.newInstance();
			SOAPMessage message = factory.createMessage();
			SOAPEnvelope envelope = message.getSOAPPart().getEnvelope();
			SOAPBody body = envelope.getBody();
			QName sname = new QName("http://service.soap.org/", "add", "ns");
			SOAPBodyElement ele = body.addBodyElement(sname);
			ele.addChildElement("a").setValue("22");
			ele.addChildElement("b").setValue("13");
			// 消息穿件完成，控制台输出消息内容
			message.writeTo(System.out);
			// 4、发送SOAPMessage消息,并获得相应信息
			SOAPMessage response = dispatch.invoke(message);
			System.out.println("\n invoking......");
			response.writeTo(System.out);
			// 5、解析出相应信息的结果
			Document doc = response.getSOAPPart().getEnvelope().getBody()
					.extractContentAsDocument();
			String result = doc.getElementsByTagName("addResult").item(0)
					.getTextContent();
			System.out.println("\n addResult=" + result);

相应的SOAPMessage消息结构如下：

    
    
        
            
               35
            
        
    

4、通过源数据的方式传递：这里远程服务方法接口返回值定义成java对象便于xml和java转换，@WebResult

@WebResult(name="User")便于对结果xml和java的转换
@XmlRootElement
public class User {

	private int id;
	private String username;
	private String nickname;
	private String password;
	
	public User() {
	}
	public User(int id,String username,String nickname,String password)
	{
		this.id = id;
		this.username = username;
		this.nickname = nickname;
		this.password = password;
	}
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getNickname() {
		return nickname;
	}
	public void setNickname(String nickname) {
		this.nickname = nickname;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
}

远程服务接口

@WebService
public interface IMyservice {
	@WebResult(name="addResult")
	public int add(@WebParam(name="a")int a,@WebParam(name="b")int b);
	
	/**以下返回的结构名称都设置成user，是为了对传递的soap消息很好的进行xml和java之间的转换**/
	@WebResult(name="user")
	public User addUser(@WebParam(name="user")User user);
	@WebResult(name="user")
	public User login(@WebParam(name="username")String username,@WebParam(name="password")String password);
	@WebResult(name="user")
	public List list();

}

基于源数据的SOAP传递

// 1、创建service服务
			URL url = new URL("http://localhost:8989/ws?wsdl");
			QName qname = new QName("http://service.soap.org/", "MyserviceImpl");
			Service service = Service.create(url, qname);
			// 2、创建dispatch(通过源数据的方式传递)
			Dispatch dispatch = service.createDispatch(new QName(
					"http://service.soap.org/", "MyserviceImplPort"),
					Source.class, Service.Mode.PAYLOAD);
			// 3、根据用户对象创建相应的xml
			User user = new User(3, "sean", "肖恩", "123456");
			JAXBContext cxt = JAXBContext.newInstance(User.class);
			Marshaller marshaller = cxt.createMarshaller();
			// 转换xml时去掉头标签
			marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
			StringWriter writer = new StringWriter();
			marshaller.marshal(user, writer);
			System.out.println(writer.toString());
			// 4、封装相应的part addUser
			String payload = ""
					+ writer.toString() + "";
			StringReader reader = new StringReader(payload);
			StreamSource source = new StreamSource(reader);

			// 5、通过dispatch传递payload
			Source response = dispatch.invoke(source);
			// 6、将response转换成dom进行操作使用Transform转换
			Transformer trans = TransformerFactory.newInstance()
					.newTransformer();
			DOMResult result = new DOMResult();
			trans.transform(response, result);
			// 7、XPath处理dom
			XPath xPath = XPathFactory.newInstance().newXPath();
			NodeList nl = (NodeList) xPath.evaluate("//user", result.getNode(),
					XPathConstants.NODESET);
			User user2 = (User) cxt.createUnmarshaller().unmarshal(nl.item(0));
			System.out.println(user2.getUsername());